Slag steam-generator.



C. H. SMOOT.

SLAG STEAM GENERATOR.

APPLICATION FILED JULY 6 1914.

Patented Feb. 9, 1915.

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UNITED STATES PATENT CHARLES H. SMOOT, OF NEW YORK, N. Y., ASSIGNOR TO SLAG STEAM GENERATOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

SLAG STEAM-GENERATOR.

Application filed .Tu'y 6, 1914.

- duction of pressure on the liquid. 7

By means of my invention a power generating apparatus interposed between the apparatus where evaporation takes place and a condensing apparatus is supplied with motive fluid. 'lhe steam generated by the heat contained in the slag and transferred to the liquid can be used for a difi'erent purpose than to generate power, such as heating. for instance.

By means of my improved apparatus I can discharge slag into the liquid contained in an open vessel in such a manner that the temperature of the liquid will be higher .than heretofore has been possible in emploving known methods in which slag and water were mixed in an open vessel.

I do not wish to be limited to the specific use which can be made of the steam generated by the use of the apparatus disclosed in this specification. i

The accompanying drawing is a vertical cross section of an embodiment of my invention.

A is iii O sii vessel in which liquid is circulated by means of pipe B. Slag is discharged into vessel A from furnace C by duct D. I

E is a duct which carries the slag and liquid mixed into water collecting and slag settling chamber F. In chamber F the slag falls by gravity into channel H and is-carried out by convever I, which conveyer I in the embodiment of my invention is shown as a helical conveyer. It is obvious that any type of conveyor can be used and that I do not wish to be restricted to this special type Specification of Letter; Patent.

'9 and 12 hinged at point 11.

Patented Feb. 9, 1915. Serial No. 849,101. I

O is a conical shaped nozzle, which obliges the liquid carried by pipe B to flow downward through opening 23 into vessel A. The slag discharged by duct D falling into the liquid carried by pipe B through the circular orifice 23 encounters water at h gh velocity in throat 8 of. chamber A. The walls of the throat are formed by the exterior wall 10 of chamber A and by plates Screw 13 presses on point .11 and its displacement therefore controls the size of throat 8. Plate 9 is allowed to slide up and down, due to its being held in place by pin 15 entering into slot 14.

16 and 17 are screws which enter nuts '18 and 19. These nuts are held to the conical shaped nozzle O and control its upward or downward motion. By means of screws 16 and 17 the orifice of'discharge of the liquid can be varied. thus giving a varying quantity for the How of liquid down throat 8 of chamber A.

P is a pipe located on water collecting and slag settling chamber F and Q is a valve controlling the opening of pipe P.

R is a valve controlled by float S, valve R controlling the opening and closing of pipe T through which additional of make up liquid is introduced into mixing chamber A through pipe B.

U is s float controlling the opening and clos ng of butterfly Valve V in duct L.

'W is a guide for the liquid flowing from water collecting and slag settling chamber F into evaporating chamber K through pipe Y.

X is an elbow in pipe E which allows steam generated in pipe E to be discharged into the liquid contained in settling cham-' chamber F. Obviously, this static head can be made as great as desired.

In practising my-invention, the slag falling from duct D is given an increased velocity after it mixes with the flow of liquid in chamber A. This increase of velocity is obtained by imparting velocity to the liquid I Y carried by pipe B and discharged through orifice 23, said velocity being in turn imparted to the slag in the hroat or restricted orifice 8. Through throat 8 both slag andliquid are carriml downward.

The distance 24, 25 represents a static head of liquid in chamber A, into which the mixture of liquid and hot slag progresses. The presence of this static head permits the liquid to be heated to a higher temperature without evolution of steam than if it were subjected to atmospheric pressure only. The velocity of the mixture ina downward direction of throat 8 is also con? verted into pressure by reduction of velocity, still further increasing the head, and therefore the boiling point of the liquid, permitting a still furtherincrease in temperature of the liquid withoutevolution of steam. Furthermore, the downward velcc ity of the mixture is sufficient to prevent the free escape of any steam which may be generated, the downward velocity of the mixture being opposed to the upward passage of steam.

For the ccnversionof velocity into pressure, I prefer the channel in chamber A to be divergent from throat 8 downward, although this is not necessary, and a straight channel will suflice, provided its sectional area is sufiicient to permit the velocity of the mixture to be appreciably lower than the velocity of the liquid jet directed into throat 8 of chamber A.

The distance 24, 25 measures a head opposed to the pressure in Water collecting and slag settling chamber F. This static head is also augmented by the velocity head or pressure prrduced by the reduction of velocity in that part of chamber A below throat 8. I

The mixture of slag and liquid is carried through pipe E and discharged into settling chamber F. The steam entrained is allowed 4 a passage through'elbow X, which elbow A is connected with pipe B, pipe B being perforated by openings 20, 20, 20. This liberation of steam from the mixture of slag and liquid before it is discharged into settling chamber F is desirable, as it affords means to distribute the steam in the entire mass of liquid contained in settling chamber F, thus having a tendency to equalize the temperature of said mass of liquid. The pressure in this steam space is regulated by means of a relief valve Q, allowing steam to escape from the steam space through pipe P. In steam space of chamber F the gases which may be entrained or generated by the slag and liquid mixture flowing through pipe E accumulate, and when valve I Q, opens this accumulation of gases is liberated. The predetermined pressure applied to valve Q must be less than the static head 24, 25, plus the velocity head created by the jet of liquid flowing through throat 8 of the mixing chamber A. The slag falling by gravity through the bottom of water collecting and slag settling chamber F is carried through channel H by conveyor I. i

The liquid is then conveyed from water collecting and slag settling chamber F into evaporating chamber K through pipe Y. The guide IV then brings this liquid to the upper part of the evaporating chamber K, thus giving the heated water a small static head at its point of evaporation. Steam is generated in evaporating chamber K, due to diminution of pressure on the liquid. In evaporating the liquid coolsand after being cooled in chamber K it is taken out by pump M and brought by pipe B through opening 23 into the mixing chamber A. Additionalliquid is introduced at any suitable point, such as point $0 in the current of liquid pumped from evaporating chamber K into mixing chamber A, thus reducing as much as practical the temperature of the liquid at its point-of mixture with the slag. The source of additional fluid is shown diagrammatically. 36, T being a pipe for liquid flowing from 36 to point 40. Steam is carried out of the evaporating chamber K by duct L until the liquid level in evaporating chamber K reaches a predetermined maximum height; float U is then brought into play and acts upon butterfly valve V by means of rod 30. The pressure limit in evaporating chamber K is .maintainedby means of a valved opening 33; 34 being the seat and 35 the loading spring of the valved opening 33. Spring 35 will be in tension or compression'depending on the pressure limit in evaporating chamber being under or above atmosphere.

In the water collecting and slag settling chamber F, I use a float S controlling valve erating apparatus and'condensing apparatus as means to use the steam generated in evaporating chamber K.

Many other uses familiar to those skilled in the art are obvious.

It is also to be noted that the pressure of the steam discharged in evaporating chamber K may be discharged at pressures in excess of atmospheric pressure absolute.

In the following claims I do not wish to be restricted to slag, but to any pre-heated material which may be mixed with the liquid referred to herein.

Having thus described my invention, what I claim is:

1. A slag steam generator comprising a mixing chamber for a flow of slag andga flow of liquid and means to produce a liquid seal controlled by the flow of liquid to oppose the escape of steam from the mixture of the mixture of slag and liquid after it has passed through the restricted opening or throat 4. A slag steam generator comprising a mixing chamber for the slag and liquid, having a throat or restricted opening prolonged by a diverging channel for the passage of the mixture of slag and liquid.

5. A slag steam generator comprising a mixing chamber for the slag and liquid, means to impart velocity to the liquid and means to transfer said velocity to the slag during the process of mixing.

6. A slag steam generator comprising a mixing chamber for the slag and liquid,

means to impart velocity to the mixture and means to transform said velocity into pres sure.

7. A slag steam generator comprising a mixing chamber for slag and liquid and means for maintaining the liquid below its boiling point and means for removing air or gas before delivering the liquid to a container closed to the atmosphere, from which steam may be generated.

8. A slagsteam generator comprising a mixing chamber for slag and a liquid, means to impart velocity to the liquid and adjustable means to control the volume and the velocity of the liquid when entering into contact with the slag.

9. A slag steam generator comprising ,a mixing chamber for slag and a liquid, and

adjustable means controlling the velocity of the liquid when entering into contact with v the slag. 1

10. A slag steam generator comprising a.

mixing chamber for slag and a liquid having a restricted and thereafter enlarged channel for the flow of the and liquid.

11. A slag steam generator; comprising a chamber for the mixture of slag and liquid having downward converging walls mixture of slag forming a throat or restricted passage for the flow of said mixture and having a liquid inlet located above said throat. 12. A slag steam generator comprising a chamber for the mixture of a How of slag and a flow of liquid, moans to accelerate the velocity of the flow of said mixture at a given point of said chamber and means to reduce said velocity at a lower point of said chamber.

13. A slag steam generator comprising a mixing chamber for the slag and the liquid,

a chamber for collecting the heated liquid, means to separate the sla from the liquid and means to subject the liquid contained in the latter chamber to pressures in excess of atmospheric pressure absolute.

14. A slag steam generator comprising a mixing chamber for the slag and the liquid, a chamber for collecting the. heated liquid, means to separate the slag from the liquid and means to subject the liquid contained in the latter chamber to a static head of liquid.

15. A slag steam generator comprising a mixing chamber for the slag and the liquid.

16. A slag steam generator comprising a mixing chamber for the slag and the liquid, a chamber for collecting the heated liquid, means to separate the slag from the liquid and means to subject the liquid contained in the latter chamber to the pressure due to transformation of velocity of flow of mixmixing chamber for the slag and liquid, a chamber for collecting the heated liquid an evaporating chamber for cooling the liquid and pumping means for circulating the cooled liquid into'the mixing chamber- 20. A slag steam generator comprising a mixing chamber for the slag and liquid, a chamber for collecting the heated water and means to separate in the collecting chamber the gases entrained or generated in the mixture of slag and liquid. Y Y

21. A slag steam generator comprisinga mixing chamber for the slag and liquid, a

chamber for collecting the heated water and means to separate in the collecting chamber and discharge to atmospherethe gases en trained or generated in the mixture of slag and liquid.

A slag steam generator comprising a mixing chamber for the slag and liquid, a chamber for collecting the heated liquid and means controlled by the liquid level in the collecting chamber adapted to introduce additional liquid into the mixing chamber.

23. A slag steam generator comprising a mixing chamber for the slag and liquid, a chamber for collecting the heated liquid and means to discharge in divided streams the steam generated by the'mixture of slag and liquid into the body of heated Water con tained in the collecting chamber.

24. A slag steam generator comprising a mixing chamber for the slag and liquid, a collecting chamber having direct communication u'ith the mixingchamber for the heated liquid. said collecting chamber being equipped with a valved opening, means to force the heated liquid into the collecting chamber and evaporating chamber for cooling the heated liquid.

25. A slag steam generator comprising a mixing chamber forthe slag and liquid, a

collecting chamber for the 'heated liquid,-

equipped With a valve loaded to a maximum predetermined pressure, an evaporating chamber and means to control the pressure allowable in said evaporating chamber.

'26. A slag steam generator comprising a mixing chamber for the slag and liquid, a collecting chamber for the heated liquid and means to separate the steam generated in the mixture of the liquid and slag before said mixture enters the collecting chamber.

27. A slag steam generator comprising a mixing cham er for a flow of slag and a flow of liquid, means to increase the velocitv of the flow of said mixture of slag and liquid. a collecting chamber for the heated liquid and means to separate the slag and the liquid.

28. A slag steam generator comprising a mixing chamber for the mixtureof allow of slag and a flow of liquid, means to impart velocity to the slag during the process of mixing and an evaporating chamber adapted to receive the heated water and to cool same. V

29. A slag steam generator comprising a mixing chamber, for the mixture of. a flow of slag and a flow of liquid, means to transform the velocity of the mixture into pressure and pumping means adapted to create a flow of the liquid.

30. A slag'steam generator comprising a mixing chamber for the mixture of slag and liquid, an evaporating chamber to cool the heated liquid and means responsive to the pressure of the steam in the evapo'ating chamber controlling the discharge of steam to atmosphere.

31. A slag steam generator comprising means to mix slag and liquid, means to collect the heated liquid under pressure in excess of atmospheric pressure and means to cool the liquid thus collected.

32. A slag steam generator comprising meansto mix slag and liquid, means to collect the heated liquid under pressure in excess of atmospheric pressure and means to evaporate the liquid thus collected at pressures equal to or lower than atmospheric pressure.

33. A slag steam] generator comprising means to mix slag and a liquid, means to collect the heated liquid under pressure in excess of atmospheric pressure, means to cool the liquid thus collected and means to return said cooled liqu d into the mixing means for the slag and liquid.

34. A slag steam generator comprising means to mix slag and liquid and means to separate the liquid fro the slag under pressure in excess of atmos heric pressure and means to evaporate said liquid at pressures equal to or lower than atmospheric pressure,

35. A slag steam generator comprising means to subiect a flow of liquid to the heating action of a flow of slag. meansto convert the velocity oftbe flow of liquid into pressure, means to collect said liquid under pressure, means to cool said liquid and means to subject the cooled liquid to the heating action of the slag.

In witness ivhereof I hereunto subscribe my name this 3rd day of July, 1914.

CHARLES H. SMOOT. 

